/*
 *   Copyright 2012, Thomas Kerber
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
package milk.jpatch.code;

import java.util.List;

import org.apache.bcel.classfile.Code;
import org.apache.bcel.generic.InstructionList;

import milk.jpatch.CPoolMap;
import milk.jpatch.attribs.AttributesPatch;

/**
 * Modifies a method bytecode by applying a series of code deltas.
 * @author Thomas Kerber
 * @version 1.0.0
 */
public class CodeModif extends CodePatch{
    
    private static final long serialVersionUID = 1615767460873156966L;
    
    /**
     * The code deltas.
     */
    private List<CodeDelta> deltas;
    
    /**
     * 
     * @param attribsPatch The attributes patch.
     * @param deltas The code deltas.
     */
    public CodeModif(AttributesPatch attribsPatch, List<CodeDelta> deltas){
        super(attribsPatch);
        this.deltas = deltas;
    }
    
    @Override
    public Code patch(Code c, CPoolMap map){
        InstructionList il = new InstructionList(c.getCode());
        for(CodeDelta d : deltas)
            il = d.patch(il, map);
        c.setCode(il.getByteCode());
        return c;
    }
    
}
